What if those with disabilities aren’t your user base?

I have a slight problem with accessibility. I have no issue with those with disabilities but here is my problem. They are not primarily my user.

I build recruiting sift questionnaires for international clients. These are all hosted online. All our candidates are doing the same basic question/answer test for one reason; we can't create interactive experiences because of our WCAG2.0 Level A commitment.

When asked, clients want interactive experiences which push the boundaries and are 'cutting edge'. And we respond, but what about your candidates with disabilities? When we look at the data, fewer than 0.1% need additional help. This help involves additional time to complete the online assessment or have them travel to an assessment centre to do a test face-to-face or skipping the sifting process completely.

Instead of a text question with options, a user could be playing on-screen, complete puzzles, word finders, crosswords. We could involve swiping images, drag and dropping of shapes, sorting words, etc.

So my question is ... wouldn't it be better to design amazing rich interactive experiences for 99.9% of the users to enjoy and engage with (disregarding WCAG2.0)? And, meet the needs of the blind/impaired users in another way?

I would love to hear your thoughts. Remember these aren't public tests. They are for job applicants and known individuals, albeit millions of them.